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    A quantified ethogram for oviposition in triturus newts: Description and comparison of T. helveticus and T. vulgaris

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    Authors
    Norris, Karen M.
    Hosie, Charlotte A.
    Affiliation
    University of Chester
    Publication Date
    2005-03-25
    
    Metadata
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    Abstract
    Female newts of the genus Triturus deposit and wrap their eggs individually in the submerged leaves of aquatic macrophytes. Although this behaviour has previously been described, the different elements of the oviposition process have not been fully characterized nor any attempt made to quantify the behavioural elements. The study examined the oviposition behaviour of the two similarly sized species, Triturus helveticus and T. vulgaris on a standardized substrate macrophyte, Rorippa nasturtium–aquaticum. Continuous focal sampling was used to develop a baseline of discrete behavioural elements enabling quantification and comparison of oviposition behaviour between the two species. The results showed that the same pattern of elements was followed for each egg laid and the same key elements of the process were present in each newt species. Although these are broadly similar in size, there were striking differences in certain aspects of the oviposition sequence between the two species. Key findings were that leaf sniffing and leaf flexing and a measure of the duration of ovipositing were all significantly greater in females of T. helveticus and females of T. vulgaris laid significantly more eggs than those of T. helveticus in a standard observation period. The work presented here defines a baseline ethogram and shows how it can be used to reveal quantifiable differences in closely related species. This demonstrates its value in furthering our understanding of oviposition – a key aspect of female behaviour currently understudied in Triturus behavioural ecology, despite its intrinsic interest and value in understanding recruitment and maintenance of populations.
    Citation
    Ethology, 111(4), 2005, pp. 357-366
    Publisher
    Ethologische Gesellschaft e.V.
    Journal
    Ethology
    URI
    http://hdl.handle.net/10034/68060
    DOI
    10.1111/j.1439-0310.2005.01071.x
    Additional Links
    http://www.wiley.com/bw/journal.asp?ref=0179-1613
    Type
    Article
    Language
    en
    Description
    This article is not available through ChesterRep.
    ISSN
    0179-1613
    1439-0310
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1439-0310.2005.01071.x
    Scopus Count
    Collections
    Biological Sciences

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